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Accurate S-parameter measurement using HP8720

Question asked by navroop on Jan 6, 2011
Latest reply on Jan 13, 2011 by navroop
I am doing my project which invloves maesuring complex permittivity of materials at school. We have HP8720 network analyzer and i am trying to get accurate s-parameter measurements. I am having issues in moving reference plane since I am using rectangular waveguide to hold sample.
I did the calibration and dont know how to move the reference plane to where material is placed in waveguide.

Any suggestions or help will be appreciated.